Idempotency and ledgers
Stripe: payments
- Idempotency keys
- Double-entry ledger
- Webhooks to merchants
- Reconciliation
- Card network outage
- Final test
Charge cards once with idempotency keys, post double entries on a hot account, deliver signed webhooks, reconcile a bank file, and ride out a card network outage.
Final testThe card network answers 80 s late for 15 s while charges rise x1.5. Your final board runs once more with a new traffic seed.
Stage 5 of 5 · 10 parts given · 9,000 requests/s
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